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Question
In the lipid bilayer of a cell membraneA) the hydrophobic heads are on the inner and outer surface and the hydrophilic tails in the middle.
B) the hydrophilic heads are on the inner and outer surface and the hydrophobic tails in the middle.
C) there is a random arrangement of phospholipids.
D) the hydrophilic heads are on the inner and outer surface and cholesterol is in the middle.
E) cholesterol is on the inner and outer surface and phospholipids are in the middle.
Answer
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Related questions
Q:
Identify the Brnsted-Lowry acids in the following reaction.H2O + CO32- ->HCO3- + OH-A) H2O/HCO3-B) CO32-/HCO3-C) OH-/HCO3-D) CO32-/OH-E) H2CO3/H2O
Q:
According to the Brnsted-Lowry definition,
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B) a base produces H+ ions in aqueous solutions.
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E) an acid acts as the solvent.
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A catalyst lowers the activation energy of a chemical reaction.
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For the following reaction, the equilibrium constant Kc is 2.0 at a certain temperature. Bromine can be liquefied easily and removed from the reaction vessel as it is formed. If this is done, how will it affect the equilibrium reaction?2NOBr(g) -> 2NO(g) + Br2(g)A) More products will be made as Br2 is removed.B) There will be a larger proportion NOBr in the vessel when equilibrium is reached.C) Less NO will be made.D) The pressure in the vessel will increase.E) The equilibrium constant will change.
Q:
In an exothermic reaction, heat can be considered a
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B) product.
C) rate.
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In the reaction of nitrogen gas with oxygen gas to produce nitrogen oxide, what is the effect of adding more oxygen gas to the initial reaction mixture? The reaction is shown below.N2(g) + O2(g) -> 2NO(g)A) The equilibrium shifts to produce more N2.B) The equilibrium shifts to produce more NO.C) The equilibrium is not affected.D) Extra catalyst is required to reach equilibrium.E) The temperature of the reaction mixture is raised.
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B) regulation.
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Q:
When a reaction is at equilibrium,
A) all reaction stops.
B) no more reactants are converted to products.
C) the reaction is no longer reversible.
D) the forward and reverse reactions occur at the same rate.
E) the products and reactants have the same energy content.
Q:
A chemical reaction has reached equilibrium when
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C) all products have been removed from the reaction mixture.
D) the catalyst has been used up.
E) the rate of the forward reaction equals the rate of the reverse reaction.
Q:
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Q:
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Q:
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D) strong electrolyte
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Q:
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Q:
0.50 mole of KCl is added to 2.0 kg of water. The boiling point of the solution will be ________ the boiling point of pure water.
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D) water inside only
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Q:
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A) water
B) 0.5% NaCl
C) 2% glucose
D) 0.9% NaCl
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Q:
During the process of diluting a solution to a lower concentration,
A) the amount of solute does not change.
B) the amount of solvent does not change.
C) there is more solute in the concentrated solution.
D) the volume of the solution does not change.
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Q:
What volume of a 1.5 M KOH solution is needed to provide 3.0 moles of KOH?
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Q:
When 200. mL of water are added to 100. mL of 12% KCl solution the final concentration of KCl is (Assume the volumes add.)
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Q:
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Q:
An increase in the temperature of a solution usually
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Q:
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B) the Cl- ions are attracted to the partially negative oxygen atoms of the water molecule.
C) the K+ ions are attracted to Cl- ions on the KCl crystal.
D) the K+ ions are attracted to the partially negative oxygen atoms of the water molecule.
E) the K+ ions are attracted to the partially positive hydrogen atoms of the water molecule.
Q:
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Q:
STP stands for 25 C and 760 mmHg.